122500001 has 24 divisors (see below), whose sum is σ = 141214080. Its totient is φ = 105579936.

The previous prime is 122499997. The next prime is 122500019. The reversal of 122500001 is 100005221.

It is not a de Polignac number, because 122500001 - 2² = 122499997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122500051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323030 + ... + 323408.

It is an arithmetic number, because the mean of its divisors is an integer number (5883920).

Almost surely, 2^122500001 is an apocalyptic number.

It is an amenable number.

122500001 is a deficient number, since it is larger than the sum of its proper divisors (18714079).

122500001 is a wasteful number, since it uses less digits than its factorization.

122500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 122500001 is about 11067.9718557647. The cubic root of 122500001 is about 496.6441955410.

Adding to 122500001 its reverse (100005221), we get a palindrome (222505222).

The spelling of 122500001 in words is "one hundred twenty-two million, five hundred thousand, one".